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Volume
4 Issue
11
July 31, 2007
Northern Strip Till Expo: Tillage
for Today & Tomorrow
Tuesday, August 14, 2007 --
9:00 AM - 4:00 PM
Jerry Nordick Farm, Rothsay, MN
University
of Minnesota Extension Launches
New Forage Website and Newsletter
A new Forage Website and Newsletter have been launched by the
University of Minnesota Extension Forage Team. The website
highlights current events and programs, research updates, hay
auction results, and recent publications.
U of
MN Applied Weed Science:
New Look for Weed Management Info on the Web
In the states with corn, soybeans, small grains and sugar beets
as major crops, herbicides are applied to more than 97% of crop
acreage. Although herbicides are applied
to increase profitability, incorrect usage can have negative
economic and environmental impacts.
United
States Soybean Rust Commentary
Soybean rust was reported in Matagorda County, Texas (7/30). It was
also reported on soybean in a second county in a soybean sentinel
plot in Arkansas - Hempstead County (7/27); along with five counties
(Bowie, Delta, Lamar, Navarro, and Red River Counties) in commercial
soybean fields in Texas (7/26 and 7/27). Some of these reports are
from multiple fields within a county.
Soybean Aphid Update
Populations remain quite tolerable in the northwest region. The
exception might be in heavily wooded areas and with smaller fields
such as in Ottertail County near Underwood, a location which
persistently has problems with the aphids.
Bean
Leaf Beetle and Green Cloverworm
As fields are scouted for soybean aphid you might be seeing some
insect feeding on leaves. At least two insects are contributing to
this damage, perhaps three.
Lygus
Bug Concerns in Sugarbeet
There have been some reports of lygus in sugarbeet in the RRV in
the past week. Treatment with an insecticide may be justified
if an infestation exceeds 1 Lygus bug per plant (adults and
nymphs combined) after checking 30 to 50 plants in a field.
Non-Bt Corn Should be Scouted for Corn Borer
Have you scouted your non-Bt corn fields? Currently, the
population of borer larvae are reaching the critical third instar.
Why is this stage critical? That is the age when larvae begin to
tunnel stalks or enter ears.
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